PlayStation Plus update for February 4: Guardians of Middle-earth goes free, other games 50% off

PlayStation Plus strikes again, and it's time for some new games to occupy our hard drives for cheap or the low cost of nothing. This week's games include the action based MOBA, Guardians of Middle-earth, Karateka, Big Sky Infinity, and Knytt Underground.

If for some reason you own a PS3 and you don't yet own this fantastic service, PS Plus runs for $49.99 per year, and through March 4th, you'll get an additional three free months. Already an existing PS Plus member, and still want to take advantage of the offer? Purchasing an additional membership will stack to your current one, along with the three free months.

"Descriptions taken from PlayStation Blog"

Guardians of Middle Earth (PS3)

Free for PS Plus members (Original Price: $14.99)

Take up arms in the clash over Middle-earth with the most powerful heroes from the greatest fantasy epic of all time. Form alliances with and against friends and jump into the wildly popular Multiplayer Online Battle Arena (MOBA) gameplay. With 20 iconic guardians from Middle-earth, and new guardians coming all the time, it's the perfect time to get lost in the multiplayer fray in epic 5 versus 5 battles.

Karateka (PS3)

A beautifully simple premise with a fun pick up and play fighting system, Karateka blends old school gameplay charm with fluid combat animations and gorgeous backdrops and music to provide an amazing adventure with a ton of replay value. Are you skilled enough to rescue Princess Mariko with the fighting finesse of her True Love? Or will you need the power of the burly brute to topple the opposition?

Big Sky Infinity (PS3 and PS Vita – Cross Buy Enabled)

Big Sky Infinity is a lightning-fast, randomly-generated game that adapts to how you play; which means, it's never the same game twice. You pilot a spaceship that's flying straight into an alien armada. The further you progress, the harder it gets, with giant bosses, streams of enemies, and unique events that shift the gameplay to keep you on your toes. It's Cross Buy enabled, so this purchase will get you a version to play on both your PS Vita and PS3.

Knytt Underground (PS3 and PS Vita – Cross Buy Enabled)

Knytt Underground tells a quirky and strange tale that's set in the future, hundreds of years after the humans disappeared from the planet. Sprites, fairies and various other lifeforms roam tunnels in the underground. With a curiousity about their origin and the meaning of life, they strike out to find those answers they try to understand the ones who had obviously figured it out: the humans. It's a beautiful adventure with a vast environment to explore and story driven quests that will keep you hooked.